Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Start of September brings a slight shift in the average high-temperature, dipping a bit from August's moderately hot 78.1°F (25.6°C) to a pleasant 69.8°F (21°C). Nelson encounters a steady low-temperature average of 50.4°F (10.2°C) throughout the month of September.Humidity
In Nelson, the average relative humidity in September is 73%.Rainfall
In Nelson, in September, it is raining for 10.6 days, with typically 1.57" (40mm) of accumulated precipitation. Throughout the year, there are 111.2 rainfall days, and 20.87" (530mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In Nelson, the average length of the day in September is 12h and 31min.On the first day of the month, sunrise is at 6:42 am and sunset at 7:58 pm. On the last day of September, sunrise is at 7:19 am and sunset at 7:02 pm CDT.
Sunshine
In September, the average sunshine is 8.9h.UV index
In Nelson, Minnesota, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.Note: In September, an average UV index of 4 transforms into the following instructions:
Preventative actions are necessary - Recommendations to ward off sunburn are given. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Nelson have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Nelson have in September?
What is the UV index reading in September?
Average temperature in September
Nelson, MN
- Average high temperature in September: 69.8°F
The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (17.6°F).
- Average low temperature in September: 50.4°F
The month with the highest average low temperature is July (60.1°F).
The coldest month (with the lowest average low temperature) is January (4.5°F).
Average pressure in September
Nelson, MN
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Nelson, MN
- Average wind speed in September: 8.7mph
The windiest month (with the highest average wind speed) is April (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (7.5mph).
Average humidity in September
Nelson, MN
- Average humidity in September: 73%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is May (70%).
Average rainfall in September
Nelson, MN
- Average rainfall in September: 1.57"
The wettest month (with the highest rainfall) is June (3.5").
The driest months (with the least rainfall) are January and February (0.59").
Average rainfall days in September
Nelson, MN
- Average rainfall days in September: 10.6 days
The month with the highest number of rainy days is June (17.1 days).
The month with the least rainy days is February (1.4 days).
Average snowfall in September
Nelson, MN
- Average snowfall in September: 0"
The month with the highest snowfall is December (5.43").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Nelson, MN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Nelson, MN
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in September
Nelson, MN
- Average sunshine days in September: 17.3 days
The month with the most sunshine days is October (18.3 days).
The month with the least sunshine days is June (11.1 days).
Average UV index in September
Nelson, MN
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in September
Nelson, MN
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 69).
The months with the least cloud cover are July and August (Cloud cover 30).
Average visibility in September
Nelson, MN
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
Nelson, Minnesota, USA
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